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Tachometer bounces everywhere

Tiny
SHADOWTHEF
  • MEMBER
  • 1995 NISSAN MAXIMA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 126,000 MILES
My tachometer sometimes bounces everywhere and in the most case about 75 percent of the time when it bounces up and down is when I gas it to stay in the flow of traffic. But just would like to know why it bounces everywhere on these occasions when I do this.
-Thanks


http://www.2carpros.com/forum/automotive_pictures/294127_maxima_dash_1.jpg

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Tuesday, December 30th, 2008 AT 4:47 PM

2 Replies

Tiny
ZACKMAN
  • MECHANIC
  • 4,202 POSTS
Hello, this happens when the ignition system backfeeds into the tach signal which is caused by a bad ignition coil, wires and spark plugs. I would start with a good tune up and throttle body service. Here are two guides that will help you get the problem fixed.

https://www.2carpros.com/articles/how-to-tune-up-a-car-engine

and

https://www.2carpros.com/articles/throttle-actuator-service

Please run down these guides and report back

Cheers
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Friday, January 2nd, 2009 AT 1:42 AM
Tiny
365K
  • MEMBER
  • 2 POSTS
My 1997 Maxima runs very well, having almost 365k. I had this problem and I did the major tune up with coil the problem is gone and the engine as never run better ! I love this site.
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Wednesday, February 17th, 2010 AT 9:43 PM

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